Keywords: Lofentanil molecule ball.png Ball-and-stick model of the lofentanil molecule an opiod analgesic C H O N 2015-01-07 own DS Visualizer Jynto more from this user Space-filling version cc-zero Images by Jynto Carboxylate esters Methyl esters Anilidopiperidines N N-disubstituted primary amides Fentanyl analogs Ball-and-stick models |